XML 304 R160.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Post-Employment Benefits - Summary of Amount Recognized in the Consolidated Balance Sheet (Parenthetical) (Detail) - SEK (kr) kr in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Disclosure of defined benefit plans [abstract] |  |
Effect of asset ceiling | kr 635 | kr 755

X
- Definition Liability asset defined benefit plan asset ceiling. + References No definition available. + Details
Name: | eric_LiabilityAssetDefinedBenefitPlanAssetCeiling
Namespace Prefix: | eric_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | ifrs-full_DisclosureOfDefinedBenefitPlansAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration